子午加速风机叶片中线的CAD建模研究

Study on CAD Modeling of the Central Curve of Meridional Acceleration Fan Blade

对子午加速风机叶片中线的设计方法进行了研究 ,建立了基于二次、三次 Bézier曲线的叶片中线模型 ,并介绍了具体的 CAD方法和步骤 ,最后给出了用最大挠度点控制叶片中线形状 (三次Bézier曲线 )

Studies are carried out on Design method of the central curve of meridional acceleration fan blade.CAD Models of the curves are set up respectively based on square and cubic Bézier curves.Detailed methods are also presented.Finally,an example for controlling the curve with maximum deflection point is given.